Originally Posted by Stupac
Why is the HD-A2 in so high of demand when it's only 1080i. That's what my 360 HD add on does.
Why does Toshiba even make anything less than 1080p when 1080p is the whole point?
If you read through the following it will help explain.http://en.wikipedia.org/wiki/Telecine
Basically, the original content on an HD-DVD or Blu-Ray disc is 1080p24. Most players do not output the native 1080p24 because there are few display devices currently that can handle this. I believe this will change next year.
1080i60 is a commonly accepted input, and 1080p60 has become popular this year, so most players are oriented around supporting these rates. To convert the original 1080p24 (24 frames per second) a 3:2 pull down operation (see above link) is performed to translate the content to 1080p30 (30 frames per second). If you then break up the 1080p30 frames into two fields (odd and even lines in each field) you can display 1080i60 (60 fields per second).
In other words, you're getting all of the material the disc has to offer, but you do introduce some judder because you had to insert extra frames as part of the 3:2 pull down operation.
The ideal would be to output the original 1080p24 source to a display that can operate at some multiple of 24 (like 72hz, 96hz or 120 hz). The display would simply show each frame multiple time (for example 3x24=72hz).
If anyone sees mistakes in the above, please correct me.